The router that is the end point of the virtual link does indeed have an interface in area 0 - that's where the virtual link terminates!!
so yes, the virtual link has to authenticate to area zero, same as if it were directly connected. Chuck -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Hollis Sent: Sunday, October 28, 2001 8:16 PM To: [EMAIL PROTECTED] Subject: OSPF Authentication with Virtual Links [7:24457] Ran into following during a lab scenario, but can't find any documentation on this. Can someone please verify if this is correct? With md5 authentication configured in OSPF Area 0, following must also be configured on ABR with virtual link... (the ABR which is not directly connected to Area 0.) "area 0 authentication message-digest". Note that Router A does not have any interfaces actually in Area 0. Router A.................. router ospf 110 log-adjacency-changes area 0 authentication message-digest (??????) area 1 virtual-link 192.168.5.5 network 172.16.4.0 0.0.0.255 area 1 network 172.16.12.0 0.0.0.255 area 3 Router B............... interface Serial0.504 point-to-point ip address 172.16.1.1 255.255.255.0 ip ospf message-digest-key 4 md5 mypassword frame-relay interface-dlci 504 ! router ospf 110 log-adjacency-changes area 0 authentication message-digest area 1 virtual-link 192.168.2.2 network 172.16.1.0 0.0.0.255 area 0 network 172.16.5.0 0.0.0.255 area 1 Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=24464&t=24457 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
